ikarus/scheme/ikarus.load.ss

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;;; Ikarus Scheme -- A compiler for R6RS Scheme.
;;; Copyright (C) 2006,2007,2008 Abdulaziz Ghuloum
;;;
;;; This program is free software: you can redistribute it and/or modify
;;; it under the terms of the GNU General Public License version 3 as
;;; published by the Free Software Foundation.
;;;
;;; This program is distributed in the hope that it will be useful, but
;;; WITHOUT ANY WARRANTY; without even the implied warranty of
;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
;;; General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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(library (ikarus load)
(export load load-r6rs-script fasl-directory)
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(import
(except (ikarus) fasl-directory load load-r6rs-script)
(only (ikarus.compiler) compile-core-expr)
(only (psyntax library-manager)
serialize-all current-precompiled-library-loader)
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(only (psyntax expander) compile-r6rs-top-level)
(only (ikarus.reader.annotated) read-script-source-file))
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(define-struct serialized-library (contents))
(define fasl-extension
(cond
[(<= (fixnum-width) 32) ".ikarus-32bit-fasl"]
[else ".ikarus-64bit-fasl"]))
(define fasl-directory
(make-parameter
(cond
[(getenv "IKARUS_FASL_DIRECTORY")]
[(getenv "HOME") =>
(lambda (s)
(string-append s "/.ikarus/precompiled"))]
[else ""])
(lambda (s)
(if (string? s)
s
(die 'fasl-directory "not a string" s)))))
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(define (fasl-path filename)
(let ([d (fasl-directory)])
(and (not (string=? d ""))
(string-append d (file-real-path filename) fasl-extension))))
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(define (load-serialized-library filename sk)
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(let ([ikfasl (fasl-path filename)])
(cond
[(or (not ikfasl) (not (file-exists? ikfasl))) #f]
[(< (file-mtime ikfasl) (file-mtime filename))
(fprintf (current-error-port)
"WARNING: not using fasl file ~s because it is older \
than the source file ~s\n"
ikfasl
filename)
#f]
[else
(let ([x
(let ([p (open-file-input-port ikfasl)])
(let ([x (fasl-read p)])
(close-input-port p)
x))])
(if (serialized-library? x)
(apply sk (serialized-library-contents x))
(begin
(fprintf (current-error-port)
"WARNING: not using fasl file ~s because it was \
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compiled with a different instance of ikarus.\n"
ikfasl)
#f)))])))
(define (do-serialize-library filename contents)
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(let ([ikfasl (fasl-path filename)])
(cond
[(not ikfasl) (void)]
[else
(fprintf (current-error-port) "Serializing ~s ...\n" ikfasl)
(let-values ([(dir name) (split-file-name ikfasl)])
(make-directory* dir))
(let ([p (open-file-output-port ikfasl (file-options no-fail))])
(fasl-write (make-serialized-library contents) p)
(close-output-port p))])))
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(define load-handler
(lambda (x)
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(eval x (interaction-environment))))
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(define read-and-eval
(lambda (p eval-proc)
(let ([x (read p)])
(unless (eof-object? x)
(eval-proc x)
(read-and-eval p eval-proc)))))
(define load
(case-lambda
[(x) (load x load-handler)]
[(x eval-proc)
(unless (string? x)
(die 'load "not a string" x))
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(unless (procedure? eval-proc)
(die 'load "not a procedure" eval-proc))
(let ([ls (read-script-source-file x)])
(let f ()
(unless (null? ls)
(let ([a (car ls)])
(set! ls (cdr ls))
(eval-proc a))
(f))))]))
(define load-r6rs-script
(lambda (filename serialize? run?)
(unless (string? filename)
(die 'load-r6rs-script "file name is not a string" filename))
(let ([prog (read-script-source-file filename)])
(let ([thunk (compile-r6rs-top-level prog)])
(when serialize?
(serialize-all
(lambda (file-name contents)
(do-serialize-library file-name contents))
(lambda (core-expr)
(compile-core-expr core-expr))))
(when run? (thunk))))))
(current-precompiled-library-loader load-serialized-library)
)